1 how is type and grade determined 07202012 06112013

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1) How is type and grade determined? 07/20/2012 06/11/2013 Page 3 of 15 Approved for Public Release C8 NAV 30 – Forging Process
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FORGING PROCESS AUDIT CHECKLIST Administrative information Yes No N/A 11 Melt source for the forging ingots/billets/bars: 1) Are specification requirements and effective revision communicated and controlled in the purchase order to sub-tier suppliers? a) Procedure # 2) Are material reduction and reduction ratios addressed in material purchase orders? 3) If a sub-tier melter is used, is performance by that sub-tier evaluated (receiving inspection results, on-site audit, mail-in survey, positive material inspection, alloy identity verification, source inspection, etc.)? 4) Are all applicable customer requirements (e.g., DFAR requirements) passed down in purchase orders to sub-tier suppliers? 07/20/2012 06/11/2013 Page 4 of 15 Approved for Public Release C8 NAV 30 – Forging Process
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Receiving Inspection Yes No N/A 12 Receiving inspection of ingots / billets / bars: 1) Who performs the receiving inspection? a) Procedure # 2) Are inspections for physical markings, heat identification, visual and dimensional inspection performed? a) Sample objective evidence for prior receipts: 3) Is the chemistry of the starting material verified (alloy verification test, independent testing, MTR review, etc.)? 4) Is this verification to ensure compliance with the specification requirements documented? Verify objective evidence. a) Who performs the verification? b) What actions are taken when defects are found? 13 Is the ingot / billet / bar (including “drops” and “cutoffs”) identification and traceability maintained during storage? 14 If an ingot is to be cropped top and/or bottom, is a sufficient amount of metal removed? 1) How is this verified?
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Forging Process Yes No N/A 15 Amount of reduction: 1) Who determines amount of ingot reduction to be performed during forging operation? 2) What factors are considered? 3) Is a calculation performed? 4) Are the starting material condition, size, and reduction considered? 5) Is there a process procedure for determining the amount of reduction? a) Procedure # 16 Forging work instructions and procedures: 1) Paper traveler or on-line computer? 2) Who is responsible for preparing and approving forging instructions? 3) Is the issue of starting material for production controlled (heat, size, etc.)? 4) Is weight and starting material size controlled? 5) Is forging press or hammer size controlled? 6) Forging Procedure # 17 Work station review: 1) Are the instructions available at workstations? 2) Do the instructions reference processing steps? 3) Do the instructions control identification traceability? 4) Review a sampling of in-process or completed work instructions. Does the information appear sufficient and correct? Check for operator signatures and dates.
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